800-720-0950
PERFORMANCE FRONT AXLE SHAFTS
Sierra Gear Performance Chromoly Upgrades

Chromoly Performance Axle Shafts from Sierra Gear & Axle are designed for high performance use.

Stock axle shafts are typically made from 1040 and 1541 steel and are perfectly adequate for stock applications. For our performance axle shafts, we use 4340 Chromoly steel, which has been hardened to maximize the strength and ductility of the axle shafts. The combination of superior materials and advanced manufacturing processes make Sierra Gear Chromoly axles far stronger and more durable than standard stock axles. These Performance axle shafts are available for Jeep, Ford, GM and Dodge applications and are backed by our 10 Year Limited Warranty.

For a listing of stock replacement axle shafts for Jeep, visit our Jeep Stock Replacement Axles page.

Get the job done right with one of our Axle Bearing and Seal Kits featuring OEM components from manufacturers like Timken, Koyo, National and Spicer

h

Application Chart:

Performance & Chromoly Axle Shaft Application Chart.

 

FRONT AXLES – CHROMOLY – For use with DANA 30™ Axles
YEAR APPLICATION   SP LENGTH SIDE SIERRA #
72-81 CJ5 / CJ7 Narrow Kit   27 Kit Both SA 12139
72-81 CJ5 CJ7 Inner   27 14.14” R SA 10209
72-81 CJ5 CJ7 Inner   27 27.02” L SA 10220
72-81 CJ5 / CJ7 Narrow Kit   30 Kit Both SA 12129
72-81 CJ5 CJ7 Inner   30 14.14” R SA 10109
72-81 CJ5 CJ7 Inner   30 27.02” L SA 10120
82-86 CJ7 Wide Kit   27 Kit Both SA 12142
82-86 CJ7 Inner   27 15.82” R SA 10210
82-86 CJ7 Inner   27 28.69” L SA 10221
82-86 CJ7 Wide Kit   30 Kit Both SA 12130
82-86 CJ7 Inner   30 15.82” R SA 10110
82-86 CJ7 Inner   30 28.69” L SA 10121
72-86 CJ Outer   27 8.72” B SA 10128
87-96 YJ/XJ Non-Disconnect Kit   27 Kit Both SA 12145
97-06 TJ Kit   27 Kit Both SA 12148
87-06 TJ/YJ/XJ Inner Non-Disconnect   27 32.25” R SA 10113
87-06 TJ/YJ/XJ Inner   27 16.58” L SA 10124
87-96 YJ/XJ Non-Disconnect Super Kit   30 Kit Both SA 12131
97-06 TJ Super Kit   30 Kit Both SA 12132
87-06 TJ/YJ/XJ Inner Non-Disconnect   30 32.31” R SA 10129
87-06 TJ/YJ/XJ Inner   30 16.58” L SA 10130
87-06 TJ/YJ/XJ Outer   27 6.11” B SA 10104
07-UP JK Non-Rubicon Kit   27 Kit Both SA 12152
07-UP JK Inner   27 34.60” R SA 10136
07-UP JK Inner   27 18.80” L SA 10137
07-UP JK Outer (1310)   32 6.32” B SA 10141
FRONT AXLES – CHROMOLY –  – For use with DANA 44™ Axles
YEAR APPLICATION   SP LENGTH SIDE SIERRA #
68-79 Ford 1/2 Ton Kit   30 Kit Both SA 12175
68-79 Ford 1/2 Ton Inner   30 33.91” R SA 10107
68-79 Ford 1/2 Ton 3/4 Ton Inner   30 18.91” L SA 10118
68-79 Ford ¾ Ton Inner   30 34.75” R SA 10134
68-79 Ford ¾ Ton Inner   30 18.63” L SA 10135
76-77 Ford ¾ Ton Outer   19 10.66” B SA 38817
71-77 Ford Bronco Kit   30 Kit Both SA 12177
71-77 Ford Bronco Inner   30 27.94” R SA 10106
71-77 Ford Bronco Inner   30 18.31” L SA 10105
78-79 Ford Bronco Kit   30 Kit Both SA 12175
78-79 Ford Bronco Inner   30 33.91” R SA 10107
78-79 Ford Bronco Inner   30 18.91” L SA 10118
71-79 Ford Outer   19 9.72” B SA 10126
69-80 GM Kit   30 Kit Both SA 12172
69-80 GM Inner   30 18.31” R SA 10105
69-80 GM Inner   30 36.13” L SA 10116
69-80 GM Outer   19 9.94” B SA 10127
74-79 Wagoneer Drum Brakes Kit   30 Kit Both SA 12171
74-79 Wagoneer Inner   30 14.69” R SA 10111
74-79 Wagoneer Inner   30 33.19” L SA 10122
74-79 Wagoneer Drum Outer   19 9.72” B SA 10126
74-92 Wagoneer Disc Outer   19 9.94” B SA 10127
80-92 Wagoneer Kit   30 Kit Both SA 12174
80-92 Wagoneer Inner   30 15.80” R SA 10112
80-92 Wagoneer Inner   30 32.12” L SA 10123
03-06 TJ Rubicon Kit   30 Kit Both SA 12165
03-06 TJ Rubicon Inner   30 31.88” R SA 10114
03-06 TJ Rubicon Inner   30 16.62” L SA 10125
03-06 TJ Rubicon Outer   27 6.11” B SA 10104
07-UP JK Rubicon Kit   30 Kit Both SA 12155
07-UP JK Rubicon Inner   30 33.53” R SA 10139
07-UP JK Rubicon Inner   30 19.76” L SA 10138
07-UP JK Rubicon Outer   32 6.32” B SA 10140
71-80 Wagoneer / Scout Inner   30 14.69” R SA 10111
71-80 Scout Inner   30 32.91” L SA 10119
71-80 Jeep CJ / Scout Outer   27 8.72” B SA 10128
N/A Blank Inner   None 22.00”   SA 10440
N/A Blank Inner   None 39.00”   SA 10441
FRONT AXLES – CHROMOLY – For use with DANA 50™ Axles
YEAR APPLICATION   SP LENGTH SIDE SIERRA #
99-04 Ford Outer   35 9.38” B SA 10652
FRONT AXLES – CHROMOLY – For use with DANA 60™ Axles
YEAR APPLICATION   SP LENGTH SIDE SIERRA #
79-93 Dodge Inner   35 15.98”
75-93 Dodge Inner   35 35.1” L SA 10661
93-Dn Dodge Outer (Non-CM)   35 12” B SA 10650
78-79 Ford Kit   35 Kit Both SA 12178
78-79 Ford Inner   35 34.56” R SA 10664
78-79 Ford Inner   35 18.68” L SA 10663
83-98 Ford Kit   35 Kit Both SA 12179
83-98 Ford Inner   35 36.68” R SA 10665
83-98 Ford Inner   35 15.98” L SA 10662
98-Dn Ford Outer   35 11.40” B SA 10651
99-04 Ford Outer   35 9.38” B SA 10652
77-91 GM Kit   35 Kit Both SA 12180
77-91 GM Inner   35 17.67” R SA 10660
77-91 GM Inner   35 35.1” L SA 10661
91-Dn GM Outer   35 12” B SA 10650
  Blank Inner   None 22”   SA 10600
  Blank Inner   None 39”   SA 10601
GM 8.5” FRONT AXLES – NON-CHROMOLY
YEAR APPLICATION   SP LENGTH SIDE SIERRA #
79-88 Assembly   28   R SA 72747-1X
79-88 Assembly   28   L SA 72747-2X
GM 8.5” FRONT AXLES – CHROMOLY
YEAR APPLICATION   SP LENGTH SIDE SIERRA #
77-90 GM Kit   30 Kit Both SA 12170
77-90 GM Inner   30 19.15” R SA 10132
77-90 GM Inner   30 35.46” L SA 10115
77-90 GM Outer   19 9.94” B SA 10127

Find a Dealer

Find the application and ratio you need? Locate a Sierra Gear & Axle Distributor near you.

Gear Calculator

Doing a gear ratio change but not sure what you want? Try our Differential Gear Calculator.